Show Address Only Requires Restart

Adds columns to display Sender/Recipients mailaddress only.

Signature sync for Gmail

This extension allows you to automatically use your signature from Gmail accounts in Thunderbird. No longer need to maintain two separated signatures!

Edit Email Subject (EES)

This module allows you to change/edit email subjects

Header Tools Lite

Allows to modify the header and the source of messages

Folder Pane View Switcher

Folder view arrows; switch to "All Folders" view when hovering during drag & drop; allow user to select which views are enabled or tied to the view arrows.

LookOut (fix version)

LookOut decodes winmail.dat (TNEF encoded) files that may come from a misconfigured Microsoft Exchange server or Outlook user allowing access to the original attachments
Support: Thunderbird

MailHops

MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.

Compact Headers

Limits displayed headers to 1 or 2 lines.

ReFwdFormatter

Remove the ">" prefix from quote when you make a reply.

[Source code] https://github.com/isshiki/ReFwdFormatter

CompactHeader Requires Restart

Add symbol in header plane to switch between compact and expanded view. Work only for Thunderbird 68.0 and older. Currently, there are no plans to update this for newer versions.

Phoenity Buttons

Adds some toolbar buttons using phoenity icons.

ConfirmFolderMove Requires Restart

Introduces a preference that allows users to be prompted before moving folders.

Telephone Message Requires Restart

Quickly and easy way to inform someone of a missed call. This addon allows you to email the person your passing the message onto, collecting their email address from your address book, with a collection of ready made messages.

Mutt Keys Requires Restart

Creates Mutt like key bindings for Thunderbird. Inspired by the mouseless extension.

Safe Links Cleaner

Clean up the display of links rewritten by Microsoft ATP Safe Links when reading and composing mail, so the original links can easily be viewed and copied, while retaining the rewritten addresses as the actual target of all links.

Close On Reply Requires Restart

Close window or tab when you reply to a message.

Skyrock by RaouF Requires Restart

Blogs, profils, rencontres, groupes,photos,.. Avec Skyrock.

Sender Name Requires Restart

Spam Scores

Displays spam scores according to mail headers. Supports spam/ham score headers of Rspamd, SpamAssassin and MailScanner. The add-on adds a column with the overall spam score to the mail list view and shows details of any matched spam/ham rule.

Perapera Japanese-French Dictionary File Requires Restart

This is additional dictionary file for use with the Perapera Japanese Pop-up Dictionary add-on.